Initial commit

app/src/main/java/eu/chainfire/libsuperuser/Application.java

@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2012-2014 Jorrit "Chainfire" Jongma
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package eu.chainfire.libsuperuser;
+
+import android.content.Context;
+import android.os.Handler;
+import android.widget.Toast;
+
+/**
+ * Base application class to extend from, solving some issues with
+ * toasts and AsyncTasks you are likely to run into
+ */
+public class Application extends android.app.Application {
+    /**
+     * Shows a toast message
+     * 
+     * @param context Any context belonging to this application
+     * @param message The message to show
+     */
+    public static void toast(Context context, String message) {
+        // this is a static method so it is easier to call,
+        // as the context checking and casting is done for you
+
+        if (context == null) return;
+
+        if (!(context instanceof Application)) {
+            context = context.getApplicationContext();
+        }
+
+        if (context instanceof Application) {
+            final Context c = context;
+            final String m = message;
+
+            ((Application)context).runInApplicationThread(new Runnable() {
+                @Override
+                public void run() {
+                    Toast.makeText(c, m, Toast.LENGTH_LONG).show();
+                }
+            });
+        }
+    }
+
+    private static Handler mApplicationHandler = new Handler();
+
+    /**
+     * Run a runnable in the main application thread
+     * 
+     * @param r Runnable to run
+     */
+    public void runInApplicationThread(Runnable r) {
+        mApplicationHandler.post(r);
+    }
+
+    @Override
+    public void onCreate() {
+        super.onCreate();
+
+        try {
+            // workaround bug in AsyncTask, can show up (for example) when you toast from a service
+            // this makes sure AsyncTask's internal handler is created from the right (main) thread
+            Class.forName("android.os.AsyncTask");
+        } catch (ClassNotFoundException e) {
+            // will never happen
+        }
+    }
+}